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Wireless Lab Test Engineer III

https://www.roberthalf.com Logo

Robert Half

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Location:
United States , Philadelphia

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

Not provided
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Job Description:

We’re seeking a hands-on Wireless Lab Test Engineer III to support device, stack, and protocol testing across Wi‑Fi and 4G/5G. This role is lab-heavy and centers on call flow analysis (RRC/NAS/IMS), log collection/triage, test reporting, and KPI evaluation. You’ll work with iOS and Android devices, capture/analyze traces with industry tools, and clearly communicate defects and insights to cross-functional partners (including OEMs/chipset teams as needed).

Job Responsibility:

  • Create, execute, and maintain manual-first test cases for Wi‑Fi + LTE/5G device and protocol behavior
  • contribute to automation over time
  • Validate 4G/LTE and 5G (SA/NSA
  • mmWave exposure a plus) protocol stack behavior, including call/message flows
  • Perform device/stack/protocol testing on iOS and Android devices in a lab environment
  • support light field testing as needed
  • Capture and analyze logs/traces (e.g., QXDM/QCAT, XCAL/XCAP) and summarize findings with clear, concise defect narratives
  • Evaluate and report test KPIs
  • produce test reports that are accurate, reproducible, and stakeholder-friendly
  • Triage issues: isolate root cause indicators at the signaling level and communicate findings to internal teams and external partners (OEMs/chipset makers)
  • Manage day-to-day lab activities, configurations, devices, and network simulator setups (e.g., Keysight UXM)
  • Collaborate with test engineers and product/engineering partners
  • operate with ownership and minimal hand-holding

Requirements:

  • 5+ years in wireless device/protocol testing (lab and field)
  • Strong understanding of wireless technologies: Wi‑Fi, 4G/LTE, 5G (SA/NSA
  • mmWave exposure a plus)
  • Solid grasp of network architecture & protocols including VoLTE, VoWiFi, RCS/SMS/MMS
  • Demonstrated experience with call/message flows over RRC and NAS
  • IMS signaling exposure is highly relevant
  • 2+ years hands-on testing with iOS and Android devices, including log collection and triage
  • 2+ years with device logging/analysis tools: QXDM/QCAT, XCAL/XCAP (or similar)
  • 2+ years with Keysight UXM or other network simulator boxes (Anritsu, Rohde & Schwarz, etc.)
  • Strong communicator and storyteller of device issues from lab/field, able to articulate findings to technical and non-technical audiences
  • Bachelor’s degree in Engineering or related field (or equivalent practical experience)
  • Onsite availability in Philadelphia, 5 days/week

Nice to have:

  • Experience with additional simulation tools and lab instrumentation
  • Exposure to automation for regression or protocol validation (you don’t need to be a pure SDET)
  • Wireless/testing-related certifications
  • Prior experience in carrier, OEM, chipset, or test-equipment environments
What we offer:
  • medical
  • vision
  • dental
  • life and disability insurance
  • company 401(k) plan

Additional Information:

Job Posted:
March 01, 2026

Work Type:
On-site work
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